I have a piece of code that generates objects that deliver functions, but the function variable pulled from the first variable only comes up as undefined.

Early in the code, an object is defined to return an object containing functions, the function in this case being something like:

/* Pulls in and sets up libraries like hapi, axios, lodash, joi, await-to-js */
/* CODE */
module.exports = {
 routes: () => {  // This is in a set location used by a well established library
  
     return [
       {
          'handler': function (a, b) { return ((a - b)/12) }
       }
     ]
  }
}

An object is created by a function in my testing scripts:

/* Pulls in and libraries like chai, chai expect, chance, to, sinon, proxyquire, and sinonChai */
/* CODE */
describe ('function fetcher', () => {
  it('should return a function', async () => {
    let testModule = proxyquire('../path-to-file/', {})
    let myObject =  await testModule.routes() // The library function that grabs the routes
    console.debug(typeof(myObject))
    console.debug(myObject)
    let result = myObject.handler
    console.debug(typeof(result))
    console.debug(result)
    result(chance.Number, chance.Number)
    /* More processing */
  })
})

And it returns

/* OUTPUT */
object
{
   handler: [Function: handler]
}
undefined
undefined

My goal is to get this line to work:

/* CODE */
return result(a, b)